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 ###Instrução: Quem é o principal concorrente quando o co-concorrente (yaar vs. pyaar) é Shalini Chandran?
 ###Tabelas: CREATE TABLE highest_batting_averages (highest_batting_averages_id AUTO_INCREMENT PRIMARY KEY, Matches INT, Innings INT, Not Outs INT, Runs INT, Average INT) CREATE TABLE april (april_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Visitor VARCHAR, Score VARCHAR, Home VARCHAR, Leading scorer VARCHAR, Attendance VARCHAR, Record VARCHAR, Streak VARCHAR) CREATE TABLE promotion_playoff (promotion_playoff_id AUTO_INCREMENT PRIMARY KEY, Position INT, Club VARCHAR, Played INT, Points INT, Wins INT, Draws INT, Losses INT, Goals for INT, Goals against INT, Goal Difference INT) CREATE TABLE miller_grand-am_cup_200_[gs_class_only]_results (miller_grand-am_cup_200_[gs_class_only]_results_id AUTO_INCREMENT PRIMARY KEY, Class VARCHAR, Class Pos. INT, Driver VARCHAR, Team/Car VARCHAR, Laps INT, Best Lap VARCHAR, On Lap INT) CREATE TABLE week_4:_july_30_and_31_2008 (week_4:_july_30_and_31_2008_id AUTO_INCREMENT PRIMARY KEY, Main contestant VARCHAR, Co-contestant (Yaar vs. Pyaar) VARCHAR, Date performed VARCHAR, Scores by each individual judge VARCHAR, Total score/week VARCHAR, Position VARCHAR, Status VARCHAR)  
SELECT Main contestant FROM week_4:_july_30_and_31_2008 WHERE Co-contestant (Yaar vs. Pyaar) = shalini chandran